Lubricator.



G.' TUGWELL.

LUBRIGATOR.

APPLIOATION FILED Nov. 5, 190e.

Patented Jan. 30, 1912.

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G. TUGWELL.

LUBRIOATOR. APPLICATION FILED Nov. 5, 1906.

Patented J an. 30, 1912.

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G. TUGWELL. LUBRICATOR.

APPLICATION FILED Nov. 5, 1906.

Patented Jan. 30, 1912.

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G. TUGWELL.

LUBRIGATOR.

APPLICATION FILED NOV. 5, 1906.

Patented J an. 30, 1912.

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COLUMBIA PLANOGRAPH co .w^sHlNGrnN. D. c.

7 SHEETS-SHEET 5.

Patented Jan. 30,1912.

G. TUGWELL.

LUBRIGATOR.

APPLICATION FILED NOV. 5, 1906.

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G. TUGWELL.

LUBRIGATOR.

APPLICATION FILED Nov. 5. 1906,

Patented Jan. 30, 1912.

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G. -TUGWBLL LUBRIGATDB..

APPLICATION FILED Nov. 5, 1906.

Patented Jan. 30, 1912.

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UNTTED STATES PATENT OFFICE.

GEORG-E TUGWELL, OF CHICAGO, ILLINOIS.

LUBRICATOR.

To all whom it may concern Be it known that I, GERGE TUGwELL, a citizen of the United States, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and use ful Improvements in Lubricators, of which the following is declared to be a full, clear, and exact description.

The invention relates to lubricating ap paratus for forcing oil from a reservoir to a number of different bearings and is particularly applicable for oiling the bearings of a locomotive or automobile engine.

The invention seeks to provide a series of pumps for forcing the oil from a suitable reservoir through a series of pipes to the different bearings and to provide simple and effective mechanism for positively actuating pump plungers and valves to insure accurate feed of the oil to the dierent bearings.

A further object of the invention is to provide a sound test apparatus to inform the operator or engine driver whether or not the oil is being properly fed to the different bearings.

The invention also seeks to provide an improved construction of oil reservoir containing the operative parts of the apparatus but which operating mechanism may be readily removed from the reservoir for inspection, repairs or the like.

The invention also provides a novel arrangement of mechanism by which separate sets of the pumps may be operated at different rates of speed so that varying amounts of oil may be fed to the different bearings.

lVith these objects in view, the invention consists in the features of construction, combinations and arrangements of parts hereinafter set forth, illustrated in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a plan view of the improved lubricator with a portion of the top plate broken away and parts shown in section. Fig. 2 is a plan View of the oil forcing pumps and operating mechanism therefor, with the reservoir or casing and a portion of the supporting frame shown in section on the line 2 2 of Fig. G. Fig. 3 is a view in elevation of the oil forcing pumps and operating mechanism with the reservoir or casing shown in sec- Specication of Letters Patent.

Application filed November 5, 1906.

repairs or the like.

Patented Jan. 30,1912.

Serial No. 341,976.

tion on the line 3 3 of Fig. 2. Fig. 4 is a similar view with parts shown in section on the line 1 -4l of Fig. 2. Figs. 5 and 6 are vertical cross sections taken on the lines 5 5 and 6 6 respectively of Fig. 2. Fig. 7 is a partial view in elevation of the oil forcing mechanism illustrating a modification. Fig. 8 is a detail section on the line L a of Fig. 7 looking in the direction of the arrows 8. Fig. 9 is a detail view in section on the line o o of Fig. 7 looking in the direction of the "arrows 9. Fig. 10 is a view similar to Fig. 7 illustrating another modication. Fig. 11 is a detail section on the line 11 11 of Fig. 10. Figs. 12 and 13 are detail sections on the line o o of Fig. 10 showing the parts in different positions.

The oil forcing mechanism is arranged within a suitable inclosing casing or oil reservoir' 1 which is preferably formed of cast metal and provided with supporting feet 2. A cover or cap plate 3 is normally secured in position to close the open upper end of the reservoir or casing 1 by screw bolts 4, which are threaded into ears 5 at the upper edges of the side walls of the reservoir and projecting inwardly therefrom. The cap plate 3 of the reservoir is provided with an opening through which the oil may be supplied to the reservoir and this opening is normally closed by a screw plug 6. The front side wall of the reservoir is provided withagage glass 7 secured overavertical slot in the front wall by a frame 8. The frame is secured to the side of the reservoir by screws 9 and a packing 10 is interposed between the frame and the side of the reservoir to prevent leaking around the gage glass.

The oil forcing pumps and the operating mechanism therefor are contained within the reservoir and are preferably so supported therein as to be readily removable for For this purpose the support-ing frame for the pumps and its drive mechanism is secured to the top plate and depends downwardly therefrom into the reservoir. This Supporting frame comprises the side portions 11 (see Figs. 2,3,4, 5 and G) which are provided with outwardly proj ecting flanges 12 at their upper edges. Bolts 13, extending through the anges 12 and through the cap plate 3, support the side frames 11 in position with their lower edges its adjacent but slightly above the bottom of the oil reservoir. The pump chambers or cylinders 14 are formed in a cross piece or body portion 15 that extends between the side frames 11 and that is preferably cast or formed in piece therewith. Eight of these pump chambers are shown in the form illus- -trated, but any desired number may be employed in accordance with the number of bearings to be oiled. The pump chambers are vertically disposed within the cross piece or bar 15, are cylindrical and are of uniform diameter. These chambers or cylinders are closed at their lower ends (see Figs. 5 and 6) and opened at their upper ends and are provided with a series of cylindrical pump plungers 16 which are nicely finished to snugly fit within the cylindrical pump chambers or cylinders.

A series of vertically disposed valve chambers or cylinders 17, one for each pump chamber are forme'd in the cross bar 15. The series of pump cylinders and the series of valve chambers are formed on opposite sides of the cross piece 15 and are staggered (as most clearly shown in Fig. 2) so that they may be arranged compactly or closely adjacent between the side frames 11.

The valve chambers or cylinders 17 are opened at each end and are provided with a series of reciprocating cylindrical valve plungers 18 which snugly fit therein. Each pump chamber or cylinder 14 (see Figs. 5 and 6) is provided at its extreme lower end with an inlet port or passage 19 that leads from the lower end of the adjacent valve chamber 17 Slightly above the inlet port the pump chamber is provided with a discharge port 20 which opens into the valve chamber and is arranged in line with a suitable outlet passage 21 that leads from the valve chamber and extends within a longitudinally projecting portion or ledge 22 on the side of the cross bar 15. Each valve 18 is provided adjacent its lower end with an annular passage or port 23 which is arranged to establish communication between the discharge port 2O of the corresponding pump cylinder and the outlet passage 21. A series of nipples 24 threaded into openings in the upper face of the ledge 22 communicate with the outlet passages 21 and are connected to a series of pipes 25 by union couplings 26. The pipes 25 preferably conduct the oil from the pumps to the bearings through the top plate 3. For this purpose the top plate is provided at one side with a series of openings 27 which communicate with a series of nipples 28 threaded into a depending portion or ledge on the under side of the cap plate and the upper ends of the pipe 25 are connected to the nipples by union couplings 29.

The pump plungers 16 are provided with a series of operating shifters 30 and the valves 18 are provided with a series of operating shifters 31. These shifters are preferably in the form of bell crank levers and are pivotally mounted to rock upon a horizontal supporting shaft 32 that extends between t-he side frame portions 11. Shift levers 30 and 31 are conveniently formed of sheet metal and are held in proper position upon the shaft 32 by intermediate spacing sleeves 33. The upper ends of the plungers 16 and valves 18 are bifurcated to embrace the ends of the shift levers 30 and 31 and are connected thereto by pivot pins 34. These pins extend through short horizontal slots 35 in the ends of the shift levers so that the levers may properly rock upon the supporting shaft 32 while the plungers and valves reciprocate within the pump and valve chambers.

Cam mechanism for operating all of the shifters 30 and 31 is carried on a cross shaft 36 that is journaled between the side frame portions 11 above the shaft 32. The cam 37 on this shaft is scroll-shaped in section and provided with an abrupt shoulder or drop from its highest to its lowest point. The free arms of the plunger shifters 30 are provided with laterally offset lugs 38 which are yieldingly pressed toward the cam 37 by a series of cushion springs 39 arranged within suitable sockets 40 in a cross piece or bar 41 and engaging offset arms 42 of the corresponding shifters. Each arm 42 extends horizontally from the main body of the shifter 30 adjacent its pivot point and is provided with a depending lug 43 adjacent its end which is engaged by the upper end of the cushion spring 39. The cross bar 41 within which the sockets 40 for the springs are formed, is preferably cast in piece with the side portions 11 and is arranged in slightly inclined position, as shown, so that the springs may properly act upon the rocking shift levers 30. These springs as stated, press t-he free ends of the shift levers toward the cam 37 and tend to force the plungers 16 downwardly into the pump chambers or cylinders 14.

The free ends of the valve shifters 31 are provided with off-set lugs 44 which are yieldingly pressed toward the cam 37 by a series of coiled, tension springs 45, which extend between the horizontal arms of the bell crank levers 31 and a cross rod 46 extending between the side frames 11. These springs 45 press the lugs 44 on the free arms of the shift levers 31 toward the cam 37 and tend to force the valves 18 downwardly or outwardly within the valve chambers or will move in either direction slightly in advance of the corresponding movement of the adjacent plunger. As the cam 37 moves the shift levers 30 and 31 the valve 18 will be first lifted to open the inlet port 19 leading to the pump cylinder or chamber and thereby establish communication between the oil reservoir and the pump chamber. At the same time, as indicated in Fig. 5, the valve will close t-he discharge port 20 leading from the pump chamber. The pump plunger 16 is then raised to draw in a charge of oil into its cylinder. Vhen the free ends of the shift levers are forced over the shoulder of the cam 37 by the springs 39 and 45, the valve 1S will be first moved outwardly to close the inlet port 19 and to establish communication between the discharge port 20 of the pump cylinder and the outlet passage 21. The descent of the plunger 16 will then force the oil in the cylinder through the ports 20, 23 and 21 and through the discharge pipe 25 which supplies one of the bearings. The end portion of the pump plunger 16 (see Figs. 5 and 6) is provided on its side with a short longitudinally extending groove 47 in line with the ports 19 and 20 so that neither of these ports is closed by the movement of the plunger, and so that practically all of the oil in the cylinder may be forced out through the discharge passage when the plunger is forced into the lowest part of the cylinder.

It will be noted that the inner or suction movement of the plunger and valve is effected by the cam 37 while the outward or forcing' movement is effected by the springs 39 and 45, so that the discharge stroke of the pump is quickly effected to properly force the oil from the cylinder and through the discharge or supply pipe to the bearing, even though the cam shaft 36 is driven at a comparatively slow speed. The time of operation however of both the suction and discharge strokes of the plunger 16 and valve 1S is controlled by the cam 37 so that these parts will operate in proper timed relation.

The improved sound test apparatus provided, comprises a suitable header 48 having a series of nipples 49 that are threaded into openings in its side face and connected by couplings 50 to a series of pipes 51 leading to the different bearings to be lubricated. r1`he sound test header may be located at any convenient point, but in the form shown it is mounted upon the cap plate 3 of the oil reservoir. It is held in place thereon by screws 52 extending through a base flange 53 on the heazder and into the cap plate. A packing 54 between the flange 53 and the cap plate prevents leaking at this point and a series of ports or passages 55 communicate with the passages 27 in the cap plate 3 and with the nipples 49 and supply pipes 51.

The ports or passages 55 are L-shaped as shown, and one portion of each passage is enlarged to form a shoulder or seat 56 for a valve or plunger 57. Each valve or plunger 57 is vnormally held in its seat by a coiled cushion spring 5S extending between the plunger and a cap plate 59 which is held upon the face of the header 48 by screws 60. Each plunger 57 snugly fits within the bore of the passage 55 and is provided with a stem 61 extending upwardly through the coiled spring 5S and through the plate or bar 59.

A sounder in the form of a metal plate 62 is mounted in horizontal position upon a rod 63 which is fixed to and projects upwardly from the header 43. The sounder plate 62 is held upon the rod 63 between a loose sleeve or collar 64 thereon and an arm or lever 65, the inner end of which is bifurcated to embrace the end of the rod (see Fig. 6) and is connected thereto by a pivot pin 66. A cushion spring 67 is coiled about the rod 63 and extends between a ledge or shoulder on the header 4S and sleeve 64 to hold the sounder plate 62 securely in position between the sleeve 64 and the arm or lever 65.

The sounder plate 62 extends over the stems 61 of the plungers 57 within the discharge or supply passage from the several pumps and when the forcing stroke of one of the pumps is effected by its spring 39 a body of oil is quickly forced through the discharge passage and will lift the plunger 57 to project the stem 61 so that the latter strikes the sounderplate 62 with a sharp click. The shoulder of the cam 37, as most clearly shown in Fig. 2 is arranged in a longitudinal spiral or helix about the cam shaft 36, so that the several pumps of the series are operated in regular succession and the sound test plungers will therefore operate to strike the plate 62 and emit a regular succession of clicks which will somewhat resemble the ticking of a clock. If any of the pumps fails to work the omission of one click from the regular succession will be immediately noticed and the operator or engine driver is thus warned before any of the bearings are over heated for want of oil.

It will be noted that the end of the lever 65 is provided with two fiat side faces 65a and 65b and a fiat end face 65C, and by shifting the lever either of these faces may be brought into engagement with the sound plate 62. The pivot pin 66 is nearer the side face 65h than to the side face 65a and, when the face 65b is turned into engagement with the plate 62, the latterfwill be lifted by the spring 67 out of range of the plunger stems 61 so that the test apparatus will not sound. The operator may readily ascertain the condition of the lubricator by shifting the lever 65 to bring either the face 65a or 65c into engagement with the plate to depress the same against the tension of the spring 67, so that the ste-m61 will strike upon it. Vhen the arm or lever is upright and the end face 65C is against the plate 62 a series of sharp clicks is emitted but when the lever is turned down with the face 65L in engagement with the plate the sounds emitted are somewhat muffled. In neither instance however, are the clicks at all objectionable and in a lubricator of this sortwhere there are a large number of bearings to be oiled, the improved sound test device possesses distinct advantages over a sight test apparatus, since, with the latter, in order to ascertain whether or not the lubricator is properly working, the engine driver mustlook at each one of the different sight test devices and thus, for the moment, divert his attention from everything else. The regular ticking of the present improved sound test apparatus will at all times inform the driver that th-e lubricator is in proper working order without requiring any special attention on his part. The omission of any click from the regular series will at once notify him, should oil fail to reach any oneof the bearings. The improved lubricator is especially advantageous for automobiles, since it is not necessary for the driver to divert his attention from the road or from the controlling and steering gear in order to ascertain whether or not the lubricator is working properly.

The cam shaft 36 may be driven in any suitable manner. In the form shown (see Figs. 2, 3 and 4) one end of the shaft projects beyond the adjacent side frame 11 and is provided with a worm wheel 68. This worm wheel meshes with a worm 69 on a transverse horizontal shaft 70 extending below the worm wheel and ournaled at one end (see Fig. 2) in a bearing 71 fixed to the inner face of one of the side walls of the inclosing casing or reservoir. The other end of the shaft 70 is journaled in and extends through the opposite side wall and its projecting end is provided with a suitable drive pulley 72. Other driving means for the shaft 70 may be substituted if desired. A stuffing-box 7 3 having a gland 74 surrounds the projecting end of the shaft 70 and is held in place upon the side of the reservoir by screws 7 5. Within the reservoir shaft 70 is provided with a ratchet wheel 76 which is engaged by a spring-held pawl 77 that is pivoted to a bracket 78 on the wall of the reservoir. The pawl and ratchetprevent backward movement of the drive shaft 70.

A series of adjustable stop devices are provided for adjusting the throw of the pump plungers 16 so that the amount of oil delivered from the different pumps at each stroke may be varied as desired. These stop devices are preferably in the form of screw i plungers 79 (see Figs. 4, 5 and 6) which are vertically disposed and the upper ends of which are threaded into a series of adjusting sleeves 80 which depend from the cap or cover plate 3. The lower ends of these stop plungers are bifurcated to embrace the upper edge of the arms 42 on the plunger Shifters 30. Each adjusting sleeve 80 is journaled in the cap plate 3 and is held against longitudinal movement therethrough by an adjusting or thumb piece 81 on its upper end and a flange 82 secured to the sleeve below the cap plate by a pin 83. The thumb piece 81 and flange 82 are preferably hex-shaped as shown. The stop plungers 79 are held against rotary movement by a series of pins 84 projecting therefrom through short vertical slots 85 in a cross bar 86 which extends between and is secured to the side frame portions 11. A quick thread is provided between each stop plunger 79 and its adjusting sleeve so that a slight movement of the latter will properly adjust the stop device. The engagement of the pins 84 on the stop devices 79 with the ends of the slots 85 in the cross bar 86, limits the movement of the stop devices 79 and adjusting sleeves 80, and preferably the slots are of such length that the adjusting sleeves 80 may be turned only through a single revolution. The upper face of the adjusting thumb piece 81 (see Fig. 1) has a number of figures marked thereon (from zero to 5 in the form shown) any one of which may be brought opposite an indicating arrow marked upon the upper face of the cover. To hold the sleeves 80 in adjusted position a series of springheld check dogs or pawls 87 are provided in a cross bar 88 that is fixed to the under side of the cap plate 3. In the construction shown, these stop dogs or pawls are in the form of plungers arranged in horizontally disposed sockets 89 (see Figs. 1 and 6). The outer ends of the stop dogs or plungers are notched to engage the points of the hexshaped flanges 82 on the adjusting sleeves 80. Springs 90 within the sockets 89 yieldingly hold the check dogs or plungers in engagement with the hex flanges 82.

In the position shown in the drawings, the stop devices are set to permit the full stroke of the pump plungers 16. By turning any one of the adjusting sleeves 8O to the left the corresponding stop device 79 will be forced downwardly to move the shift lever 30 through the medium of the projecting arm 42 thereon and thus slightly raise the pump plunger 16 and move the free end of the shifter slightly away from the cam 37. The outward or suction stroke of the pump plunger effected by the cam will then of course, be shorter and the inward or forcing stroke of the plunger will be arrested before it reaches the lower end of the pump cylinder 14. In this way the movement of any one of the pump plungers may be varied to deliverl different amounts of oil as desired. The figures upon the upper ends of the thumb pieces 81 in the form shown, indicate the number of drops of oil which will be delivered by the pump at each stroke.

It will be noted that the oil pumps and operating mechanism therefor are entirely contained within the oil reservoir so that it is unnecessary to employ packed stuffing boxes about the plungers 16 and valves 18, although these parts snugly fit the pump cylinders 15 and valve chambers 17 so that there is little or no leak. The stroke of the pumps may be readily adjusted from the exterior of the reservoir and the pumps and the entire operating mechanism are suspended from the removable cap plate so that they may be readily withdrawn from the reservoir for repairs. rIhe drive shaft is arranged below the cam shaft 36 whereon the worm wheel 68 is mounted so that when the cap plate and parts attached thereto are removed or replaced in position, the worm wheel 68 may be readily disengaged from or engaged with the worm 69 on the shaft 70. The self-opening and closing valves ordinarily employed with pumps of this sort are liable to stick but in the present construction the valves are positively operated so that the oil is delivered with certainty to the different bearings. The pumps and valves do not require stuffingboxes so that few repairs are necessary. In the form shown in Fig. 7 the drive shaft is mounted on the cap plate so that the necessity of employing the stuffing-box shown in Fig. 2 about the drive shaft is avoided. In this form a large worm wheel 91 upon the end of the cam shaft 36 extends through a slot 92 in the cap plate 3 and engages a worm 93 upon a transverse drive shaft 94 that is journaled in suitable bearings 95 upon the cap plate.

In automobiles or like engines the cylinders and other parts require constant oiling while other bearings need oil only at intervals. In the form shown in Fig. 7 means are provided for driving separate sets of the oiling pumps at different rates of speed so that the amount of oil supplied by the pumps to the different parts and bearings may be widely varied. In the form shown, the cams 96 for operating the plunger and valve shifters 30 and 31 of the first four pumps of the entire series, are rigidly connected to the cam shaft 36 by pins 97 while the cams 98 for operating the Shifters of the other pumps are loosely mounted on the shaft, but are connected to rot-ate together by a longitudinally extending pin or pins 99. A spur gear 100 fixed to the loose cams 98 meshes with a pinion 101 that is loosely mounted on the supporting cross shaft 32. This pinion is connected to a spur gear 102 also loosely mounted on the shaft 32 and this gear is arranged to be engaged at intervals by a mutilated or intermittent gear 103 that is fixed to the cam shaft 36. In the form shown the intermittent gear is provided with a single tooth and the gearing is such that the speed of the pumps driven by the loose cams 98 will be very slow as compared to that driven by the cams 96 which are fixed to the shaft. rIhe gearing between the two sets of cams may of course be widely varied to operate the two sets of pumps so that the difference in the rates of speed may be changed as desired. It is also obvious that the entire series of pumps may be divided into three or more sets, each set being driven from the preceding set by intermittent gearing such as is shown in Figs. 7 and 8.

Instead of providing a single spiral or screw cam for operating the pump Shifters, separate cams 96 and 98 are used in the form shown in Figs. 7 and 9, the surfaces of which are parallel to the axis of rotation so that there is no side strain upon the pump and valve Shifters as in the spiral or screw cam shown in Figs. 2 and 3. Each of the cams 96 and 98 is provided with two steps, one for the plunger shifter 30 and one for the corresponding valve shifter 31. The cams are set at different points around the shaft as indicated in Figs. 9 and 8, so that the pumps will be operated in succession to properly actuate the sound test apparatus.

Another form of intermittent gearing between different cam sections is illustrated in Figs. 10 to 13 inclusive. In this form, a screw cam 104 for operating the first set of pumps is positively driven from the shaft 70 through the medium of worm 69 and worm wheel 68. The screw on spiral cam 105 for operating the other set of pumps is provided at one end adjacent the cam 104 with a disk 106 having a series of off-set lugs or teeth 107. The disk 106 is fixed to the cam 105 and the adjacent ends of the cams are liournaled in a common bracket 108 depending from a cross bar 109 which extends between the upper ends of the side frames 11. The inner end of the cam 104 is provided with an arm 110 that carries a movable pin 111 arranged within a suitable socket at the upper end of the arm. This pin is movable parallel to the axis of rotation of the cams 104 and 105 and into and out of engagement with the teeth 107 on the disk or gear 106. A spring 112 in the socket of arm 110 engages a shoulder 113 on the pin 111 and normally holds the pin out of engagement with the teeth 107. A stationary cam lug 114 is fixed to and depends from the cross bar 109 and is arranged to engage the end of the pin 111 once in each revolution of the cam 104 so as to thrust the pin against the tension of its spring into engagement with the teeth 107. Cam 114, in the form shown, holds the pin into engagement with the teeth of the disk 106 for a space equal to the distance between two adj acentteeth on the disk so thatthe cam 105 is only advanced one tooth for each revolution of the cam 104. The fixed or stationary cam lug 114 may be of such width as to hold the pin 111 into engagement with the teeth of the disk or gear 106 for any desired fraction of a revolution.

It is obvious that numerous changes may be made in the details of construction without departure from the essentials of the invention.

Having described my invention, what I claim.as new and desire to secure by Letters Patent, is

1. In a force feed lubricator, the combination with a pump chamber, of a plunger therein, a reciprocating valve controlling the passage of oil to and from said pump chamber, shifters for said plunger and said valve, springs for actuating said shifters in one direction and cam mechanism for moving said shifters in the opposite direction and for operating said plunger and valve in proper timed relation, substantially as described.

2. In a force feed lubricator, the combination with a pump chamber, of a plunger therein, a reciprocating valve controlling the passage of oil to and from said pump chamber, shifters for said plunger and said valve, springs cooperating with said shifters to effect the inward or forcing movement of said valve and plunger and cam mechanism for effecting the outward or suction movement of said valve and said plunger and for compelling the operation of said parts in proper timed relation, substantially as described.

3. In a force feed lubricator, the combina tion with the pump chamber, of a plunger therein, a reciprocating valve controlling th'e passage of oil to and from said pump chamber, shifters for said plunger and said valve, springs for operating said shifters in one direction, cam mechanism for operating said shifters in the opposite direction and an adjustable stop for limiting the movement of said plunger, substantially as described.

4. In a force feed lubricator, the combination with an oil reservoir, of a pump chamber and a valve chamber arranged entirely within said reservoir, said pump chamber being closed at its end and said valve chamber being open and communicating with said reservoir, al plunger in said pump chamber, a reciprocating valve in said valve chamber controlling the flow of oil from said reservoir to said pump chamber and from said pump chamber to a suitable outlet, cam mechanism for'efecting the outlet or suction movement of said valve and plunger and springs for effecting the inward or discharging movement of said valves and plunger, substantially as de scribed.

5. In a force feed lubricator, the combination with an oil reservoir, of a pump chamber and a valve chamber arranged entirely within said reservoir, said pump chamber being closed at its end and said valve chamber being open and communicating with said reservoir, a plunger in said pump chamber, a reciprocating valve in said valve chamber controlling the flow of oil from said reservoir to said pump chamber and from said pump chamber to a suitable outlet, cam mechanism for effecting the outlet or suction movement of said valve and plunger, springs for effecting the outward or discharging movement of said valve and plunger, a stop for limiting the throw of said plunger and means operable from the exterior of the reservoir for' adjusting said stop, substantially as described.

6. In the force feed lubricator, the combination with an inclosing casing or reservoir and a cover plate therefor, of a frame depending fromsaid cover plate into said reservoir, a pump chamber and a valve chamber on said frame, a plunger in said pump chambbr, a reciprocating' valve in said valve chamber controlling the flow of oil from said reservoir to said pump chamber and from said pump chamber to a suit-- able outlet, a discharge pipe leading from said outlet and opening through said cap plate, shift levers mounted on said frame for operating said plunger and said valve, springs extending between said shifters and said frame for operating the same in one direction and cam mechanism on said frame for operating said shifters in theopposite direction, substantially as described.

-7. In a force feed lubricator, the combination with an inclosing casing or reservoir and a cover plate therefor, of a frame depending from said cover plate into said reservoir, a pump chamber and a valve chamber on said frame, a plunger in said pump chamber, a reciprocating valve in said valve chamber controlling the flow of oil from said reservoir to said pump chamber and from said pump chamber to a suitable outlet, a discharge pipe leading from said outlet and opening through said cap plate, shift levers mounted on said frame for operating said plunger and said valve, springs extending between said shifters and said frame for operating the same in one direction, cam mechanism on said frame for operating said shifters in the opposite direction, an adjust-able stop device depend# ing from said cap plate for limiting the movement of the shifter for said plunger and means on the outer surface of said cap plate for adjusting the position of said stop device, substantially as described.

8. In a force feed lubricator, the combination with an inclosing casing or reservoir, of a pump chamber and a plunger in said casing or reservoir, a cam and spring cooperating to shift said plunger in opposite directions, an adjustable stop device for said plunger, an adjusting sleeve journaled in one Wall of said Casing or reservoir Within Which sleeve said stop device is threaded and means for holding said stop device against rotation and for limiting its longitudinal shift, substantially as described.

9. In a force feed lubricator, the combination with an inclosing casing or reservoir, of a pump chamber and plunger Within said casing, a shift leverfor said plunger, a cam and spring cooperating with said shift lever to move said plunger in opposite directions, a stop device for limiting the movement of said shifter, an adjusting sleeve journaled in one Wall of said casing Within Which said stop device is threaded, means for preventing the rotation of said stop device and for limiting its longitudinal shift and a check pawl for holding said adjusting sleeve against movement, substantially as described.

10. In a force feed lubricator, the combination with an inclosing casing or reservoir and a cap plate therefor, of a frame depending from said cap plate Within said reservoir, a pump chamber carried by said frame, a plunger in said pump chamber, a delivery pipe leading from said pump chamber and opening through said cap plate, a shift lever on said frame for operating said plunger, a cam and a spring mounted on said frame and cooperating with said shift lever to move said plunger in opposite directions, a stop device for limit-ing the movement of said shifter, an adjusting sleeve journaled in said cap plate Within which said stop device is threaded and means on said frame for holding said stop device against rotation and for limiting its extent of movement, substantially as described.

11. In a force feed lubricator, the combination With a series of pump chambers and plungers therefor, of a series of reciprocating valves, one for each of said pump chambers controlling the flow of oil to and from said chambers and cam mechanism for operating said valves and plungers in succession, substantially as described.

1i.. The combination With an inclosing casing or reservoir, of a series of pump chambers and plungers in said reservoir, a series of reciproca-ting valves controlling the flow of oil to and from said pump chambers, operating shift Vlevers for said plungers and said valves and spirally arranged cam mechanism coperating with said shifters to actuate said valves and plungers in succession, substantially as described.

13. In a force feed lubricator, the combination with a series of pump chambers, of a series of plungers in said chambers, springs for eHecting the inivard or forcing stroke of said plungers and a spirally arranged cam device for effecting the outward or suction stroke of said plungers and controlling the successive operation thereof, substantially as described.

14. The combination with an inclosing casing or reservoir, of a series of pump chambers therein, plungers in said chambers, a series of spring-held shifters for said plungers, cam mechanism for operating said shifters in succession, and a series of adjustable stop devices for variably limiting the movement of said shifters and said plungers, substantially as described.

15. In a force feed lubricator, the combination with a series of pump chambers, of plungers in said chambers, series of discharge pipes leading from said pump chambers, test devices in said discharge pipes, mechanism for operating said pumps, a series of shifting plungers in said discharge pipes, a test sounder With Which said plungers coperate and mechanism for operating said plungers in succession, substantially as described.

16. In a force feed lubricator, the combination With a series of pumps and a series of discharge pipes leading therefrom, of operating mechanism for actuating said pumps and sound test apparatus cooperating With said series of pumps, substantially as described.

17. In a force feed lubricator, the combination with an inclosing casing or reservoir, of a series of pumps therein, a series of discharge pipes leading from said pumps, mechanism in said reservoir for operating said pumps and sound test apparatus coperating with said pumps, substantially as described.

18. In a force feed lubricator, the combination with a series of pump chambers and a series of discharge pipes leading therefrom, of a series of plungers in said chambers, mechanism for operating said plungers, a series of spring-held plungers in said discharge pipes and a sound test plate with which said plungers cooperate, substantially as described.

19. In a force feeding lubricating apparatus, the combination With a series of pump chambers and a series of discharge pipes leading therefrom, plungers in said pump chambers, springs for effecting the forcing stroke of said plungers, controlling cam mechanism for actuating said plungers, spring-held plungers in said discharge pipes actuated by the flow of oil therethrough and a sound test plate with which said plungers coperate, substantially as described.

20. In a force feed lubricator, the combie nation with a pump chamber and a dis-l sounder cooperating With said plunger, sub-r stantially as described.

21. In a force feed lubricating apparatus, the combination With a series of pumps and a series of discharge pipes leading therefrom and operating mechanism arranged to actuate said pumps at dierent rates, substantially as described.

22. In a force feed lubricator, the combination with a series of pumps and a series of discharge pipes leading therefrom, of operating mechanism for said pumps divided into sections and means for actuating the different sections of said operating mechanism at different rates, substantially as described.

23. In a force feed lubricator, the combination with a series of pumps, and a series of delivery pipes leading therefrom, of operating mechanism for said pumps divided into sections, means for driving one section of the operating mechanism and intermittent drive gearing between the sections, substantially as described.

24. In a force feed lubricator, the combination With a series of pumps and a series of discharge pipes leading therefrom, of operating cam mechanism for said pumps divided into sections, means for driving one cam section and intermittent gearing between the sections of said cam mechanism, substantially as described. l

25. In a force feed lub-ricator, the combination With a series of pumps and a series of delivery pipes leading therefrom, of an actuating cam shaft for said pumps, cam mechanism fixed to said shaft for operating some of said pumps, cam mechanism loosely mounted on said shaft for operating the remainder of said pumps, gears for driving said loose cam mechanism and a mutilated gear fixed to said shaftfor intermittently operating said driving gears, substantially as described.

GEORGE TUGWELL. Vitnesses:

JAMES H. PEIRCE, KATHARINE GERLACH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

